1,044 research outputs found
New solution of the Supersymmetric KdV equation via Hirota methods
We consider the resolution of the supersymmetric KdV equation
with () from the Hirota formalism. For the first time, a
bilinear form of the equation is constructed. We construct
multisoliton solutions and rational similarity solutions.Comment: 7 pages, 9 figures. arXiv admin note: significant text overlap with
arXiv:1104.059
Practical way of creating differential diagnoses through an expanded VITAMINSABCDEK mnemonic
Having an organized, structured thinking process is critical in medicine. It is through
this thinking process that enables one to go through the method of history-taking, which will
eventually lead to making a definitive diagnosis and all other processes that follow. The use of
mnemonic has been found to be useful for this purpose. The mnemonic VITAMINSABCDEK,
is a convenient and practical way to assist in expanding the differential diagnoses and covers
all possible causes of an illness. It is also easy to remember, as the vitamins whose letters are
represented in this mnemonic cover the entire range of vitamins known
Deposition of ZnO-Al (AZO) thin films for optical properties
Zinc Oxide (ZnO) is an inorganic compound and it is doped with aluminum to increase its capabilities.
Aluminum Zinc Oxide (AZO) thin films are semiconductor materials that have band gap energy of 3.3eV. Various method
of deposition have been study to growth AZO thin films. It has been extensively use in solar cell application, display
application, gas sensing purposes, and thin film transistors (TFTs). In this work, sol gel method and spin coating was used
to deposited AZO thin films. The ZnO sol-gel were synthesized using zinc acetate dihydrate as precursor, isopropanol as
solvent, diethanolamine as sol stabilizer, and distilled water as oxidation agent. Then, synthesized ZnO were doped with
different mole ratio of aluminum nitrate nanohydrate to produced AZO. The glass substrate was used as substrate and AZO
thin films were then calcinated at 300°C and 500°C. The characterization of AZO thin film were done using X-ray
Diffraction (XRD), Atomic Force Microscopy (AFM), Ultraviolet-visible spectroscopy (UV-Vis), Field Emission
Scanning Electron Microscope (FESEM), and Energy Dispersive X-ray spectroscopy (EDX). The XRD results show that
the ZnO with hexagonal wurtzite-type structure and temperature does have effect on the film intensity which related to
crystallinity of thin films. Through AFM analysis, the value of RMS decreases from 3.018 nm to 2.240 nm as the
temperature increases. Meanwhile, from UV-Vis result, it can be seen that AZO thin film have a high transmittance
percentage above 90% after wavelength 400 nm with band gap value of 3.3 eV. FESEM image show that the grain boundary
of AZO decrease with both parameter (mole ratio and calcinations temperature). Both parameters do have effect on AZO
thin film. EDX analysis shows that there are existence of zinc, oxide, and aluminum
Transformational leadership style and job satisfaction relationship: A study of Structural Equation Modeling (SEM)
The objective of the study was to empirically investigate the relationships between transformational leadership style proxied by charismatic or inspirational motivation,
intellectual stimulation, and individualized consideration with job satisfaction.100 respondents from an academic institution in Malaysia had voluntarily participated in the
study.The data was analyzed by means of confirmatory factor analysis (CFA) using SPSS
Amos software.The revised structural equation modeling (SEM) for relationship between
transformational leadership style and job satisfaction passed goodness-of-fit (GOF) tests
with near perfect results for absolute and incremental fit measures(chi square to degree
of freedom 1.004; p-value 0.469; RMSEA0.006; and comparative fit index (CFI) 1.000).However, only two out of the three dimensions of leadership were having significant relationships with job satisfaction.Positive relationship existed between intellectual stimulation and job satisfaction, while individual consideration was negatively related.The result also revealed that leadership was an insignificant mediator in the relationships
between charismatic, intellectual stimulation and individualized consideration with job satisfaction
Genetic Algorithm for Event Scheduling System
UTeM’s Event Alert System (UTeM-EAS) is an improved version of previous Event Alert System in Universiti Teknikal Malaysia Melaka (UTeM) official site that aims to apply Artificial Intelligence (AI) in order to provide its users with events priority. This newer system intend be more user friendly by providing organized management. The improved version is also designed to have the capability of sending Short Message Service (SMS) among UTeM’s staff to notify them of future events. Some researches about another existing Event Alert Sytem are carried to provide more understanding to the system to be developed. UTeM-EAS then is created by exploiting one of AI approach namely Genetic Algorithm (GA) with Crossover Technique. There are four main interfaces that ask for login information, add, edit and view events details. As for the development environment, UTeM-EAS is developed and to run in windows XP with support of Adobe Dreamweaver and MS SQL Server. Ozeki Messager 6 are installed and configured for this system to operate with its SMS function. The functionality, usability and security testing are conducted between UTeM’s staffs and administrators itself to measure the performance and user acceptance of the proposed system. Aside from achieving its development objectives, UTeM-EAS also gain great satisfactions from most of its tested users. The system could be more efficient if password encryption is applied and the system is able to reply the message sent by UTeM’s staff asking for further events details
Structural characterization of sulfoborate glasses containing magnesium oxide
Magnesium sulfoborate glasses of different compositions were prepared using melt quenching method with the purpose of using it for optical properties. The Fourier Transform Infra-red (FTIR) Spectroscopy, Nuclear Magnetic Resonance (NMR) and X-Ray Diffraction (XRD) have been carried out. Density and molar volume have been evaluated and analysed. From the results of XRD, the absent of discrete and continuous sharp peaks confirmed the amorphous nature of the glass compositions while the results from both FTIR and NMR revealed the existence of BO3, BO4 units. Addition of MgO to sulfoborate influenced the conversion of the dominant BO3 groups to BO4 groups. The BO4 groups are known for creating complex defects that transform into that stable trap good for optical phenomena. It was observed that the density of glass increases while the molar volume is decreases with respect to increase in concentration of alkaline earth oxide in the glass compositions
Gardner's deformations of the N=2 supersymmetric a=4-KdV equation
We prove that P.Mathieu's Open problem on constructing Gardner's deformation
for the N=2 supersymmetric a=4-Korteweg-de Vries equation has no supersymmetry
invariant solutions, whenever it is assumed that they retract to Gardner's
deformation of the scalar KdV equation under the component reduction. At the
same time, we propose a two-step scheme for the recursive production of the
integrals of motion for the N=2, a=4-SKdV. First, we find a new Gardner's
deformation of the Kaup-Boussinesq equation, which is contained in the bosonic
limit of the super-hierarchy. This yields the recurrence relation between the
Hamiltonians of the limit, whence we determine the bosonic super-Hamiltonians
of the full N=2, a=4-SKdV hierarchy. Our method is applicable towards the
solution of Gardner's deformation problems for other supersymmetric KdV-type
systems.Comment: Extended version of the talks given by A.V.K. at 8th International
conference `Symmetry in Nonlinear Mathematical Physics' (June 20-27, 2009,
Kiev, Ukraine) and 9th International workshop `Supersymmetry and Quantum
Symmetries' (July 29 - August 3, 2009, JINR, Dubna, Russia); 22 page
Conceptual Paper: Sentience of Big Data towards User Privacy Concerns and Online Self-Disclosure Activities
Big data allows widespread use and exchange of user data, and this will lead to the possibility of privacy breaches. Governments and corporations will incorporate personal data from different sources and learn a great deal about people and in turn, raise concerns about privacy. This paper will provide a conceptual understanding on the antecedents towards user privacy concerns and online self-disclosure activities, which are the knowledge and perceived risks of big data. In this paper, big data knowledge is hypothesized to decrease privacy concerns, meanwhile perceived risks is suggested to increase the outcome. Based on the framework, propositions are formulated as a basis for the study that will follow
The effectiveness of palm oil fuel ash in preventing expansion due to alkali-silica reaction
Laboratory tests were conducted to evaluate the performance of palm oil fuel ash (POFA), a recently identified pozzolanic material, in reducing the e.xpansion of mortar bars containing Tuff as a reactive aggregate where ordinary Portland cement (OPC) was replaced, mass for mass, by 0, 10, 30 and 50% POFA. The South Ajiican NBRI Accelerated Test method was used in the experimental investigation, which revealed that palm oil fuel ash has a good potential in suppressing expansion due to alkali-silica reaction
Kesan Paras N dan K dalam Larutan Nutrien terhadap Keupayaan Pertukaran Kation Akar Tanaman Selada (Lactuca sativa)
A study on the influence of nitrogen (N) (100, 200, 300 and 400 mgNL-l
) and potassium (K) (100, 200 and
400 mgKL-l) combinations in solution using the nutrient film technique, hydroponic system on the root cation
exchange capacity (GE.G) of lettuce plant (Lactuca sativa var crispa cv. Poly) was undertaken. Roots were
sampled on the 20th, 30th and 40th day after germination.
Significant increase in roots GE. Cfrom 39.4 7 to 51.11 cmol(+)kgl due to the N level was only detected on
the 40th day of sampling. However, increasing the k concentration in nutrient solution at the three sampling
times significantly decreased the root GE.C values from 29.48-57.00 to 23.25-35.92 cmol(+)kgl
. Root GE.C
increased from 27.1 7 to 46.23 cmol(+)kg1 with plant growth stage
- …